JPH11304179A - Air-conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress consumption energy simply by increasing external dimensions slightly, hence reducing entire installation space, and at the same time reducing the resistance of air flow. SOLUTION: A return air port 2, a fresh air port 4, and an air supply port 3 are provided on an upper surface along the longitudinal direction of a casing 1, at the same time air exhaust port 5 is provided on the upper surface of the casing 1 that is adjacent to the return air port 2 in a longitudinal direction or a depth direction, a ventilation draft path 20 is provided directly below the return air port 2 and an exhaust draft path 21 or a return/exhaust draft path is formed directly below the exhaust port 5, and an air filter 13, a heat exchanger 14, a humidifier 15, and an air supply fan 16 are successively installed in a fresh air ventilation path 11 reaching the air supply port 3 from the fresh air port 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to a compact air conditioner applied to a building, such as an office building, where floor space is to be used effectively.

[0002]

2. Description of the Related Art FIGS. 11 and 12 are a front view and a plan view showing a structure of an air conditioner generally used conventionally. In this air conditioner, a return air port 2 and an air supply port 3 are provided on a top surface along a longitudinal direction of a casing 1, and an outside air damper 6 is provided on a side surface of the casing 1 on a side of the return air port 2. Exhaust port 5 with port 4 and exhaust damper 7
Is provided. A blow-back return air fan 8 driven by a motor 9 in the casing 1 directly below the return air port 2.
The return air / exhaust air passage 10 extending from the air return port 2 to the exhaust port 5 is formed, and the external air port 4 is provided in the casing 1 below the return air / exhaust air path 10.
A starting end of an outside air passage 11 extending from the air passage 3 to the air supply port 3 is formed. A starting end of the outside air passage 11 and an end of the return air / exhaust air passage 10 are communicated via a return air damper 12. ing.

In the outside air passage 11, an air filter 1 is provided.
3, a heat exchanger 14 including a heating coil 14A and a cooling coil 14B, a humidifier 15, and an air supply fan 16 driven by a belt by a motor 17 are arranged in order, and air is supplied from a discharge port of the air supply fan 16 A silencing duct 18 is provided before reaching the mouth 3.

In the conventional air conditioner configured as described above, by driving the return air fan 8 and the supply air fan 16, a return air system communicating with the room to be air-conditioned passes through the return air port 2. Part of the return air RA that has flowed into the return air / exhaust air passage 10 is exhausted to the outside as exhaust EA from the exhaust port 5, and the remainder of the return air RA passes through the return air damper 12 to the start end side of the outside air air passage 11. Outside air OA that flows in from outside air port 4
And flows in the outside air ventilation passage 11 toward the air supply port 3 side. Then, the airflow in which a part of the return air RA and the outside air are merged passes through the air filter 13, the heat exchanger 14, the humidifier 15, and the air supply fan 16, passes through the silencing duct 18, and is air-conditioned as the air supply SA from the air supply port 3. It flows out to the air supply system communicating with the target room.

[0005]

In the conventional air conditioner having the above-described structure and the air-conditioning function, since the outside air port 4 and the exhaust port 5 are both provided on the side of the casing 1, the outside air port 4 and the exhaust port are provided. When connecting the outside air duct and the exhaust duct opening to the outer wall or the roof to the mouth 5, a plane space large enough to install both the outside air and the exhaust duct outside the side surface of the casing 1 is required, and the air to the air-conditioned room is required. The freedom of installing the harmonizer is low. Also,
The outside air ventilation passage 11 and the return air / exhaust ventilation passage 10 in the casing 1 are narrowed, and the airflow resistance is correspondingly large, which tends to cause an increase in energy consumption due to an increase in pressure loss.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and saves space for installing a duct outside the side surface, reduces airflow resistance, and suppresses energy consumption by only slightly increasing the external dimensions. The aim is to provide an air conditioner that can.

[0007]

To achieve the above object, an air conditioner according to the present invention according to claim 1 is provided with a return air port, an outside air port, and an air supply port on an upper surface along a longitudinal direction of a casing. In addition, an exhaust port is provided on the upper surface of the casing adjacent to the return air port in the longitudinal direction or the depth direction, and a return air ventilation path is formed immediately below the return air port, and an exhaust air vent is provided immediately below the exhaust port. A passage or a return / exhaust ventilation passage, and an air filter, a heat exchanger, a humidifier, and an air supply fan are sequentially installed in the ventilation passage from the outside air port to the air supply port. .

According to the first aspect of the present invention, all of the return air inlet, the air inlet, the outside air outlet, and the air outlet are provided on the upper surface of the casing by slightly increasing the outer dimensions of the casing. With this configuration, there is no need for space for installing outside air ducts and exhaust ducts outside the side of the casing. The space occupied by the air conditioner is reduced, and the space occupied by the entire air conditioner is reduced, and the freedom of installation in the room to be air-conditioned can be increased.

Further, by providing all the openings on the upper surface of the casing, it is possible to secure a wide air passage and a return air / exhaust passage both in comparison with the conventional structure, thereby reducing air flow resistance. Energy consumption.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a front view and a plan view of an air conditioner according to a first embodiment of the present invention.

In the air conditioner according to the first embodiment, a return air port 2, an external air port 4 having an external air damper 6, and an air supply port 3 are provided in this order on the upper surface along the longitudinal direction of a casing 1. An exhaust port 5 having an exhaust damper 7 is provided on the upper surface of the casing 1 adjacent to the return air port 2 in the longitudinal direction of the casing 1 on the side opposite to the side where the outside air port 4 exists.

An upper blowing exhaust fan 1 driven by a motor 9 in a belt in a casing 1 immediately below the exhaust port 5.
9, a return air passage 20 is formed immediately below the return air port 2, and an exhaust air passage 21 is formed immediately below the exhaust port 5. A U-shaped outside air passage 11 extending from the outside air opening 4 to the air supply opening 3 is formed in the casing 1, and a starting end side of the U-shaped outside air passage 11 and the return air passage 20. The end side is communicated via a return air damper 12.

An air filter 13, a heat exchanger 14 comprising a heating coil 14 A and a cooling coil 14 B, a humidifier 15, and an air supply fan 16 driven by a belt by a motor 17 are arranged in the U-shaped outside air passage 11 in order. The muffle duct 18 is arranged between the discharge port of the air supply fan 16 and the air supply port 3.

In the air conditioner having the above structure, the exhaust fan 19 and the air supply fan 16 are driven to
Part of the return air RA that has flowed from the return air system communicating with the room to be air-conditioned through the return air opening 2 into the return air ventilation passage 20 passes through the exhaust fan 19 and the exhaust ventilation passage 21, and is discharged from the exhaust port 5 through the exhaust EA.
The remaining portion of the return air RA discharged upwards outside and flows into the return air ventilation passage 20 passes through the return air damper 12 to the outside air ventilation passage 11.
And flows into the outside air ventilation path 11 toward the air supply port 3 side by merging with the outside air OA flowing from the outside air port 4.
Then, the airflow in which a part of the return air RA and the outside air OA join together passes through the air filter 13, the heat exchanger 14, the humidifier 15, and the air supply fan 16, passes through the sound deadening duct 18, and is supplied from the air supply port 3 as air supply SA. It is discharged to the air supply system communicating with the room to be air-conditioned. Here, since the outside air port 4, the return air port 2, the air supply port 3, and the exhaust port 5 are all provided on the upper surface of the casing 1, the outer dimensions of the casing 1, specifically, the longitudinal length of the casing 1, In the case where the outside air duct 4 and the exhaust duct 5 are connected to the outside air duct or the exhaust duct that opens on the roof or the roof only by slightly increasing the dimension in the direction, the space for installing these ducts outside the side surface of the casing 1 is increased. This is unnecessary, and the installation space of the entire air conditioner including each duct can be reduced.

Further, since all of the return air port 2, the air supply port 3, the external air port 4, and the exhaust port 5 are provided on the upper surface of the casing 1, the external air ventilation path 11 and the exhaust air Both the roads 21 can be secured widely, so that the airflow resistance can be reduced and the energy consumption can be suppressed.

Further, in the air conditioner according to the first embodiment, since the exhaust fan 19 is provided immediately below the exhaust port 5, the exhaust EA is usually smaller in quantity than the return air quantity.
It is sufficient to use the exhaust fan 19 having a capacity sufficient to discharge the exhaust gas, so that the energy consumption can be further suppressed as compared with the case where the return air fan is installed at the same location.

In the air conditioner according to the second embodiment of the present invention, as shown in FIG. 3 and FIG.
A return air fan 8 is provided on the upper surface of the casing 1 between the air outlet 4 and the upper outlet blown by a motor 9 in the casing 1 immediately below the exhaust port 5.
A return air passage 20 is formed immediately below the return air port 2,
A return / exhaust air passage 10 is formed immediately below the exhaust port 5. Since other configurations are the same as those of the air conditioner according to the above-described first embodiment, corresponding parts or corresponding parts are denoted by the same reference numerals, and description thereof will be omitted.

In the air conditioner according to the second embodiment, as in the air conditioner according to the first embodiment, the outside air duct and the exhaust duct are installed outside the side surface of the casing 1. Space is not required, the space occupied by the entire air conditioner can be reduced, and the outside air ventilation passage 11 and the return / exhaust ventilation passage 10 are both widened to reduce airflow resistance and pressure loss, thereby reducing energy consumption. It can be suppressed.

In the air conditioner according to the third embodiment of the present invention, as shown in FIGS. 5 to 7, the exhaust port 5 is made adjacent to the return air port 2 in the casing 1
A return air fan 8 is provided in the casing 1 directly below the exhaust port 5 and driven upward by a motor 9 in the casing 1, and a return air ventilation passage 20 is provided immediately below the return air port 2.
And a return air / exhaust air passage 10 is provided immediately below the exhaust port 5 at a location adjacent to the return air air passage 20 in the depth direction.
Is formed. Other configurations are the same as those of the air conditioners according to the above-described first and second embodiments. Therefore, the same or corresponding portions are denoted by the same reference numerals and description thereof will be omitted.

In the air conditioner according to the fourth embodiment of the present invention, as shown in FIGS.
And an upper exhaust fan 19 driven by a motor 9 in the casing 1 immediately below the exhaust port 5 so as to return air to the casing 1. A return air passage 20 is formed directly below the opening 2, and an exhaust air passage 21 is formed immediately below the exhaust port 5 at a location adjacent to the return air passage 20 in the depth direction. Other configurations are the same as those of the air conditioners according to the above-described first to third embodiments. Therefore, corresponding portions or corresponding portions are denoted by the same reference numerals, and description thereof is omitted.

The air conditioners according to the third and fourth embodiments can be applied to an air conditioner having a large depth of the casing 1 and have almost the same external dimensions as the conventional one. When connecting the outside air duct and the exhaust duct opening to the outer wall or the roof to the outside 5, the space for installing the duct outside the side surface of the casing 1 becomes unnecessary, and the installation occupied space of the entire air conditioner including each duct is eliminated. Can be greatly reduced.

[0022]

As described above, according to the first aspect of the present invention, all of the return air inlet, the air inlet, the outside air outlet, and the air outlet are provided on the upper surface of the casing. In the case where the duct is connected to the mouth, no space is required for installing the outside air duct and the exhaust duct outside the side surface of the casing. Therefore, compared to the conventional structure which has a space for installing both ducts on the outside of the side of the casing, the dead space is extremely small and the entire air conditioner is installed by only slightly increasing the outer dimensions of the casing. The occupied space can be reduced, and the freedom of installation in the room to be air-conditioned can be increased.

In addition, by providing all the openings on the upper surface of the casing, the airflow resistance and the pressure loss can be reduced by securing a wider outside air ventilation passage and return / exhaust ventilation passages as compared with the conventional structure. And the effect of suppressing energy consumption can be achieved.

Further, since the return air passage can have a sound absorbing effect, noise generated by the return air fan or the exhaust fan can be reduced, and noise reaching the room via the return air opening and the return air duct can be reduced. .

[Brief description of the drawings]

FIG. 1 is a front view of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a plan view of the air conditioner according to the first embodiment.

FIG. 3 is a front view of an air conditioner according to a second embodiment of the present invention.

FIG. 4 is a plan view of the air conditioner according to the second embodiment.

FIG. 5 is a front view of an air conditioner according to a third embodiment of the present invention.

FIG. 6 is a side view of the air conditioner according to the third embodiment.

FIG. 7 is a plan view of the air conditioner according to the third embodiment.

FIG. 8 is a front view of an air conditioner according to a fourth embodiment of the present invention.

FIG. 9 is a side view of the air conditioner according to the fourth embodiment.

FIG. 10 is a plan view of an air conditioner according to a fourth embodiment.

FIG. 11 is a front view of a conventional air conditioner.

FIG. 12 is a plan view of the conventional air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Return air port 3 Supply air port 4 Outside air port 5 Exhaust port 8 Return air fan 10 Return air / exhaust ventilation path 11 Outside air ventilation path 13 Air filter 14 Heat exchanger 15 Humidifier 16 Supply fan 19 Exhaust fan 20 Return Air ventilation path 21 Exhaust ventilation path RA Return air SA Supply air 0A Outside air EA Exhaust

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kenji Takase 28, Hirade Industrial Park, Utsunomiya City, Tochigi Pref.

Claims (1)

[Claims] 1. A return air port, an outside air port, and an air supply port are provided on an upper surface along a longitudinal direction of a casing, and an exhaust port is provided on an upper surface of a casing adjacent to the return air port in a longitudinal direction or a depth direction. A return air ventilation path is formed immediately below the return air port, and an exhaust air path or a return air / exhaust air path is formed immediately below the exhaust port, and a ventilation path from the outside air port to the air supply port is provided. An air conditioner in which an air filter, a heat exchanger, a humidifier, and an air supply fan are sequentially installed.